The dipole moment of HCl(g) is

CHEMISTRY · Subjective · A Level · Chemistry · Bonding · Bonding

Problem

The dipole moment of HCl(g) is 1.1 D1.1\,\text{D}, and that of HBr(g) is 0.8 D0.8\,\text{D}. The atomic polarizabilities of Ar and Kr are 1.6×10−24 cm31.6 \times 10^{-24}\,\text{cm}^3 and 2.5×10−24 cm32.5 \times 10^{-24}\,\text{cm}^3, respectively. Considering only dipole–induced dipole interactions, predict which of the following pairs—HCl–Ar, HCl–Kr, HBr–Ar, HBr–Kr—will exhibit the strongest attraction. Provide a brief justification based on the data.

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